This Polish-Latin-Lithuanian dictionary, compiled by Vilnius University Prof. K. Sirvydas (1579-1631) was the first printed work by Lithuanian lexicographers. The dictionary was very popular, and issued in five editions (first - ca. 1620). Until the very middle of the XIXth C., K. Sirvydas' dictionaries were the only printed Lithuanian language dictionaries in Lithuania Major. They contributed a great deal to standardizing and enriching the Lithuanian language.